xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
Log | Files | Refs | README | LICENSE

dri3.c (3354B)

      1 /*
      2  * Copyright © 2013 Keith Packard
      3  *
      4  * Permission to use, copy, modify, distribute, and sell this software and its
      5  * documentation for any purpose is hereby granted without fee, provided that
      6  * the above copyright notice appear in all copies and that both that copyright
      7  * notice and this permission notice appear in supporting documentation, and
      8  * that the name of the copyright holders not be used in advertising or
      9  * publicity pertaining to distribution of the software without specific,
     10  * written prior permission.  The copyright holders make no representations
     11  * about the suitability of this software for any purpose.  It is provided "as
     12  * is" without express or implied warranty.
     13  *
     14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
     16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     20  * OF THIS SOFTWARE.
     21  */
     22 
     23 #include "dri3_priv.h"
     24 
     25 #include <drm_fourcc.h>
     26 
     27 static int dri3_request;
     28 DevPrivateKeyRec dri3_screen_private_key;
     29 
     30 static int dri3_screen_generation;
     31 
     32 static Bool
     33 dri3_close_screen(ScreenPtr screen)
     34 {
     35     dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
     36 
     37     unwrap(screen_priv, screen, CloseScreen);
     38 
     39     free(screen_priv);
     40     return (*screen->CloseScreen) (screen);
     41 }
     42 
     43 Bool
     44 dri3_screen_init(ScreenPtr screen, const dri3_screen_info_rec *info)
     45 {
     46     dri3_screen_generation = serverGeneration;
     47 
     48     if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
     49         return FALSE;
     50 
     51     if (!dri3_screen_priv(screen)) {
     52         dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
     53         if (!screen_priv)
     54             return FALSE;
     55 
     56         wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
     57 
     58         screen_priv->info = info;
     59 
     60         dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
     61     }
     62 
     63     return TRUE;
     64 }
     65 
     66 void
     67 dri3_extension_init(void)
     68 {
     69     ExtensionEntry *extension;
     70     int i;
     71 
     72     /* If no screens support DRI3, there's no point offering the
     73      * extension at all
     74      */
     75     if (dri3_screen_generation != serverGeneration)
     76         return;
     77 
     78 #ifdef PANORAMIX
     79     if (!noPanoramiXExtension)
     80         return;
     81 #endif
     82 
     83     extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
     84                              proc_dri3_dispatch, sproc_dri3_dispatch,
     85                              NULL, StandardMinorOpcode);
     86     if (!extension)
     87         goto bail;
     88 
     89     dri3_request = extension->base;
     90 
     91     for (i = 0; i < screenInfo.numScreens; i++) {
     92         if (!dri3_screen_init(screenInfo.screens[i], NULL))
     93             goto bail;
     94     }
     95     return;
     96 
     97 bail:
     98     FatalError("Cannot initialize DRI3 extension");
     99 }
    100 
    101 uint32_t
    102 drm_format_for_depth(uint32_t depth, uint32_t bpp)
    103 {
    104     switch (bpp) {
    105         case 16:
    106             return DRM_FORMAT_RGB565;
    107         case 24:
    108             return DRM_FORMAT_XRGB8888;
    109         case 30:
    110             return DRM_FORMAT_XRGB2101010;
    111         case 32:
    112             return DRM_FORMAT_ARGB8888;
    113         default:
    114             return 0;
    115     }
    116 }